| Data Sufficiency Butler: April 2025 |
| April 8 | DS 1 | DS 2 |
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DS 1 Two typists P and Q work individually for 6 hours a day. What is the difference between the average number of pages typed per hour by person P on a single day and the average number of pages typed per hour by person Q on the single day?
(1) The typing speed of the person P is constant and is 10 pages per hour, whereas the typing speed of person Q is 19 pages per hour for initial three hours on the same day.
(2) Twice the average number of pages typed by person Q in one hour is 3.8 times the average number of pages typed by person P in one hour.
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DS 2 An n-sided die has sides labeled with the numbers 1 through n, inclusive, and has an equal probability of landing on any side when rolled. If the die is rolled twice, what is the probability of rolling 1 both times?(1) If the die is rolled twice, the probability that the two rolls are different is 80%.(1) If the die is rolled twice, the probability that the two rolls are equal is 1/n